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Here is what I see:

Crude Do Not Enter sign and warning

Here is when it happens: after clicking a link, in some, but not all, programs, on GNU/Linux, the only computer I own.

You cannot blame me for not knowing more. In fact, I cannot even find a single tag to tag this post.

Dan Jacobson
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  • (i) *When* did that start happening? (ii) *What* did you do just before these errors started happening? (iii) *Which* desktop environment do you use? – RonJohn Apr 06 '23 at 03:05
  • And (iv) what happens when you right-click on one of those icons? – RonJohn Apr 06 '23 at 03:06
  • This is odd, because I changed browsers and this didn’t happen. Many people change browsers… – RonJohn Apr 07 '23 at 02:36
  • (i) For many years [spoiler: ever since I uninstalled chromium, and then installed chrome on my system, but forgot to update the file mentioned below] (ii) Innocently clicked a link. (iii) Google says to echo $XDG_CURRENT_DESKTOP, which gives nothing. (iv) All I saw was a close button... and as expected, right clicking does nothing. – Dan Jacobson Apr 07 '23 at 03:53
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    The chrome installer must not update mimetypes. – RonJohn Apr 07 '23 at 04:05

1 Answers1

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Calm down. There is no reasonable way, for you, the average user, to know what is causing the problem. Yes, all most users can do is complain to the authors of the particular app that emits the message. But as you saw over the years, the problem is not particular to a single app.

One solution is to

$ ls /usr/share/applications/*.desktop

and decide on your favorite one of the hopefully many shown, and stick it in your ~/.config/mimeapps.list file, as I have done in the following example with google-chrome-unstable.desktop, (which I found on my system, but may not be on yours):

[Default Applications]
text/html=google-chrome-unstable.desktop
x-scheme-handler/https=google-chrome-unstable.desktop
x-scheme-handler/http=google-chrome-unstable.desktop
x-scheme-handler/webcal=google-chrome-unstable.desktop
Dan Jacobson
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